?? ultra.s
字號:
andn %g1, DTAG_MASK, %g1 ! IEU1 cmp %o0, %o3 ! IEU1 Group be,a,pn %xcc, dflush1 ! CTI sub %o4, (4 << 5), %o4 ! IEU0 (Group) cmp %o0, %g1 ! IEU1 Group andn %g2, DTAG_MASK, %g2 ! IEU0 be,a,pn %xcc, dflush2 ! CTI sub %o4, (3 << 5), %o4 ! IEU0 (Group) cmp %o0, %g2 ! IEU1 Group andn %g3, DTAG_MASK, %g3 ! IEU0 be,a,pn %xcc, dflush3 ! CTI sub %o4, (2 << 5), %o4 ! IEU0 (Group) cmp %o0, %g3 ! IEU1 Group be,a,pn %xcc, dflush4 ! CTI sub %o4, (1 << 5), %o4 ! IEU02: cmp %o4, %o2 ! IEU1 Group bne,pt %xcc, 1b ! CTI nop ! IEU0 /* The I-cache does not snoop local stores so we * better flush that too when necessary. */ brnz,pt %o1, __flush_icache_page sllx %o0, 11, %o0 retl nopdflush1:stxa %g0, [%o4] ASI_DCACHE_TAG add %o4, (1 << 5), %o4dflush2:stxa %g0, [%o4] ASI_DCACHE_TAG add %o4, (1 << 5), %o4dflush3:stxa %g0, [%o4] ASI_DCACHE_TAG add %o4, (1 << 5), %o4dflush4:stxa %g0, [%o4] ASI_DCACHE_TAG add %o4, (1 << 5), %o4 membar #Sync ba,pt %xcc, 2b nop .align 32__prefill_dtlb: rdpr %pstate, %g7 wrpr %g7, PSTATE_IE, %pstate mov TLB_TAG_ACCESS, %g1 stxa %o0, [%g1] ASI_DMMU stxa %o1, [%g0] ASI_DTLB_DATA_IN flush %g6 retl wrpr %g7, %pstate__prefill_itlb: rdpr %pstate, %g7 wrpr %g7, PSTATE_IE, %pstate mov TLB_TAG_ACCESS, %g1 stxa %o0, [%g1] ASI_IMMU stxa %o1, [%g0] ASI_ITLB_DATA_IN flush %g6 retl wrpr %g7, %pstate .globl __update_mmu_cache__update_mmu_cache: /* %o0=vma, %o1=address, %o2=pte */ ldub [%g6 + AOFF_task_thread + AOFF_thread_fault_code], %o3 srlx %o1, PAGE_SHIFT, %o1 ldx [%o0 + 0x0], %o4 /* XXX vma->vm_mm */ brz,pn %o3, 1f sllx %o1, PAGE_SHIFT, %o0 ldx [%o4 + AOFF_mm_context], %o5 andcc %o3, FAULT_CODE_DTLB, %g0 mov %o2, %o1 and %o5, TAG_CONTEXT_BITS, %o5 bne,pt %xcc, __prefill_dtlb or %o0, %o5, %o0 ba,a,pt %xcc, __prefill_itlb1: retl nop#ifdef CONFIG_SMP /* These are all called by the slaves of a cross call, at * trap level 1, with interrupts fully disabled. * * Register usage: * %g5 mm->context (all tlb flushes) * %g1 address arg 1 (tlb page and range flushes) * %g7 address arg 2 (tlb range flush only) * * %g6 ivector table, don't touch * %g2 scratch 1 * %g3 scratch 2 * %g4 scratch 3 * * TODO: Make xcall TLB range flushes use the tricks above... -DaveM */ .align 32 .globl xcall_flush_tlb_page, xcall_flush_tlb_mm, xcall_flush_tlb_rangexcall_flush_tlb_page: mov PRIMARY_CONTEXT, %g2 ldxa [%g2] ASI_DMMU, %g3 stxa %g5, [%g2] ASI_DMMU stxa %g0, [%g1] ASI_DMMU_DEMAP stxa %g0, [%g1] ASI_IMMU_DEMAP stxa %g3, [%g2] ASI_DMMU retry nopxcall_flush_tlb_mm: mov PRIMARY_CONTEXT, %g2 mov 0x40, %g4 ldxa [%g2] ASI_DMMU, %g3 stxa %g5, [%g2] ASI_DMMU stxa %g0, [%g4] ASI_DMMU_DEMAP stxa %g0, [%g4] ASI_IMMU_DEMAP stxa %g3, [%g2] ASI_DMMU retryxcall_flush_tlb_range: sethi %hi(PAGE_SIZE - 1), %g2 or %g2, %lo(PAGE_SIZE - 1), %g2 andn %g1, %g2, %g1 andn %g7, %g2, %g7 sub %g7, %g1, %g3 add %g2, 1, %g2 srlx %g3, PAGE_SHIFT, %g4 cmp %g4, 96 bgu,pn %icc, xcall_flush_tlb_mm mov PRIMARY_CONTEXT, %g4 ldxa [%g4] ASI_DMMU, %g7 sub %g3, %g2, %g3 stxa %g5, [%g4] ASI_DMMU nop nop nop1: stxa %g0, [%g1 + %g3] ASI_DMMU_DEMAP stxa %g0, [%g1 + %g3] ASI_IMMU_DEMAP membar #Sync brnz,pt %g3, 1b sub %g3, %g2, %g3 stxa %g7, [%g4] ASI_DMMU retry nop nop .globl xcall_report_regsxcall_report_regs: rdpr %pstate, %g2 wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate rdpr %pil, %g2 wrpr %g0, 15, %pil sethi %hi(109f), %g7 b,pt %xcc, etrap_irq109: or %g7, %lo(109b), %g7 call __show_regs add %sp, STACK_BIAS + REGWIN_SZ, %o0 b,pt %xcc, rtrap clr %l6 .align 32 .globl xcall_flush_dcache_page_cheetahxcall_flush_dcache_page_cheetah: /* %g1 == physical page address */ sethi %hi(PAGE_SIZE), %g31: subcc %g3, (1 << 5), %g3 stxa %g0, [%g1 + %g3] ASI_DCACHE_INVALIDATE bne,pt %icc, 1b nop membar #Sync retry nop .globl xcall_flush_dcache_page_spitfirexcall_flush_dcache_page_spitfire: /* %g1 == physical page address %g7 == kernel page virtual address %g5 == (page->mapping != NULL) */#if (L1DCACHE_SIZE > PAGE_SIZE) srlx %g1, (13 - 2), %g1 ! Form tag comparitor sethi %hi(L1DCACHE_SIZE), %g3 ! D$ size == 16K sub %g3, (1 << 5), %g3 ! D$ linesize == 321: ldxa [%g3] ASI_DCACHE_TAG, %g2 andcc %g2, 0x3, %g0 be,pn %xcc, 2f andn %g2, 0x3, %g2 cmp %g2, %g1 bne,pt %xcc, 2f nop stxa %g0, [%g3] ASI_DCACHE_TAG membar #Sync2: cmp %g3, 0 bne,pt %xcc, 1b sub %g3, (1 << 5), %g3 brz,pn %g5, 2f#endif /* L1DCACHE_SIZE > PAGE_SIZE */ sethi %hi(PAGE_SIZE), %g31: flush %g7 subcc %g3, (1 << 5), %g3 bne,pt %icc, 1b add %g7, (1 << 5), %g72: retry nop nop .globl xcall_capturexcall_capture: rdpr %pstate, %g2 wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate rdpr %pil, %g2 wrpr %g0, 15, %pil sethi %hi(109f), %g7 b,pt %xcc, etrap_irq109: or %g7, %lo(109b), %g7 call smp_penguin_jailcell nop b,pt %xcc, rtrap clr %l6 .globl xcall_promstopxcall_promstop: rdpr %pstate, %g2 wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate rdpr %pil, %g2 wrpr %g0, 15, %pil sethi %hi(109f), %g7 b,pt %xcc, etrap_irq109: or %g7, %lo(109b), %g7 flushw call prom_stopself nop /* We should not return, just spin if we do... */1: b,a,pt %xcc, 1b nop .globl xcall_receive_signalxcall_receive_signal: rdpr %pstate, %g2 wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate rdpr %tstate, %g1 andcc %g1, TSTATE_PRIV, %g0 /* If we did not trap from user space, just ignore. */ bne,pn %xcc, 99f sethi %hi(109f), %g7 b,pt %xcc, etrap109: or %g7, %lo(109b), %g7 b,pt %xcc, rtrap clr %l699: retry .dataerrata32_hwbug: .xword 0 .text /* These two are not performance critical... */ .globl xcall_flush_tlb_allxcall_flush_tlb_all: BRANCH_IF_CHEETAH(g2, g3, __cheetah_xcall_flush_tlb_all)__spitfire_xcall_flush_tlb_all: /* Spitfire Errata #32 workaround. */ sethi %hi(errata32_hwbug), %g4 stx %g0, [%g4 + %lo(errata32_hwbug)] clr %g2 clr %g31: ldxa [%g3] ASI_DTLB_DATA_ACCESS, %g4 and %g4, _PAGE_L, %g5 brnz,pn %g5, 2f mov TLB_TAG_ACCESS, %g7 stxa %g0, [%g7] ASI_DMMU membar #Sync stxa %g0, [%g3] ASI_DTLB_DATA_ACCESS membar #Sync /* Spitfire Errata #32 workaround. */ sethi %hi(errata32_hwbug), %g4 stx %g0, [%g4 + %lo(errata32_hwbug)]2: ldxa [%g3] ASI_ITLB_DATA_ACCESS, %g4 and %g4, _PAGE_L, %g5 brnz,pn %g5, 2f mov TLB_TAG_ACCESS, %g7 stxa %g0, [%g7] ASI_IMMU membar #Sync stxa %g0, [%g3] ASI_ITLB_DATA_ACCESS membar #Sync /* Spitfire Errata #32 workaround. */ sethi %hi(errata32_hwbug), %g4 stx %g0, [%g4 + %lo(errata32_hwbug)]2: add %g2, 1, %g2 cmp %g2, SPITFIRE_HIGHEST_LOCKED_TLBENT ble,pt %icc, 1b sll %g2, 3, %g3 flush %g6 retry__cheetah_xcall_flush_tlb_all: mov 0x80, %g2 stxa %g0, [%g2] ASI_DMMU_DEMAP stxa %g0, [%g2] ASI_IMMU_DEMAP retry .globl xcall_flush_cache_allxcall_flush_cache_all: BRANCH_IF_CHEETAH(g2, g3, __cheetah_xcall_flush_cache_all)__spitfire_xcall_flush_cache_all: sethi %hi(16383), %g2 or %g2, %lo(16383), %g2 clr %g31: stxa %g0, [%g3] ASI_IC_TAG membar #Sync add %g3, 32, %g3 cmp %g3, %g2 bleu,pt %xcc, 1b nop flush %g6 retry /* Cheetah's caches are fully coherent in the sense that * caches are flushed here. We need to verify this and * really just not even send out the xcall at the top level. */__cheetah_xcall_flush_cache_all: retry .globl xcall_call_functionxcall_call_function: rdpr %pstate, %g2 wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate rdpr %pil, %g2 wrpr %g0, 15, %pil sethi %hi(109f), %g7 b,pt %xcc, etrap_irq109: or %g7, %lo(109b), %g7 call smp_call_function_client nop b,pt %xcc, rtrap clr %l6#endif /* CONFIG_SMP */
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